[PATCH v2 1/4] gpio/aspeed: Fix incorrect number of banks

[Rashmica Gupta]

The current calculation for the number of GPIO banks is only correct if
the number of GPIOs is a multiple of 32 (if there were 31 GPIOs we would
currently say there are 0 banks, which is incorrect).

Fixes: 361b79119a4b7 ('gpio: Add Aspeed driver')

Signed-off-by: Rashmica Gupta <rashmica.g at gmail.com>
---
 drivers/gpio/gpio-aspeed.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 9defe25d4721..b83e23aecd18 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -1165,7 +1165,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 	gpio->chip.base = -1;
 
 	/* Allocate a cache of the output registers */
-	banks = gpio->config->nr_gpios >> 5;
+	banks = DIV_ROUND_UP(gpio->config->nr_gpios, 32);
 	gpio->dcache = devm_kcalloc(&pdev->dev,
 				    banks, sizeof(u32), GFP_KERNEL);
 	if (!gpio->dcache)
-- 
2.20.1